I tidy mine up now, giving the old plants a gentle going over with the shears and raking off all the leaves, debris and straw. Most crowns will have little baby new leaves. I peg the runners down where I want them and then give them a feed with chook pellets. That is all the treatment mine get, and we had such an amazing harvest from them this year! Be careful though, mine have got flowers again so if this rain ever stops, we may get a few late strawbs.